He should should have stashed the unregistered gun and explained the intruder shot himself with his own gun. Worse they could do then was throw at him for possible perjury. Yeah I could see the D.A trying to convince a jury to take a robber's word over a citizen who saw the idiot trip on his own gun. He should have said nothing, never, never talk to the cops about anything that you don't wan to be prosecuted for. He should have stashed the gun and kept his mouth shut, screw Em' let them figure it out themselves.
A gross miscarriage of justice.